Footnotes(1) Foods, fuels, and several other items are priced every month in all areas. Most other goods and services are priced as indicated: M - Every month. 1 - January, March, May, July, September, and November. 2 - February, April, June, August, October, and December.(2) Regions defined as the four Census regions.(3) Indexes on a December 1996=100 base.(4) Indexes on a December 2017=100 base.(5) Indexes on a December 1986=100 base.(6) 1998 - 2017 indexes based on substantially smaller sample.(7) Indexes on a December 2001=100 base.(8) Indexes on a 1987=100 base.

NOTE: Local area indexes are byproducts of the national CPI program. Each local index has a smaller sample size than the national index and is, therefore, subject to substantially more sampling and other measurement error. As a result, local area indexes show greater volatility than the national index, although their long-term trends are similar. Therefore, the Bureau of Labor Statistics strongly urges users to consider adopting the national average CPI for use in their escalator clauses.
NOTE: Index applies to a month as a whole, not to any specific date.